PRINTABLE IONIC STRUCTURE AND METHOD OF FORMATION

• US 20100092656A1
• Filed: 10/09/2009
• Published: 04/15/2010
• Est. Priority Date: 10/10/2008
• Status: Abandoned Application

• Current Assignee: AXON Technologies Corporation
• Original Assignee: AXON Technologies Corporation
• Inventors: Kozicki, Michael N.
• Application Number:
  US12/576,515
• Publication Number:
  US 20100092656A1
• Time in Patent Office: Days
• US Class Current: 427/58
• CPC Class Codes: H10N 70/061 Patterning of the switching material
• CPC Class Codes: H10N 70/063 by etching of pre-deposited switching material layers, e.g. lithography
• CPC Class Codes: H10N 70/245 the species being metal cations, e.g. programmable metallization cells
• CPC Class Codes: H10N 70/801 Constructional details of multistable switching devices
• CPC Class Codes: H10N 70/823 adapted for essentially horizontal current flow, e.g. bridge type devices
• CPC Class Codes: H10N 70/826 adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
• CPC Class Codes: H10N 70/841 Electrodes
• CPC Class Codes: H10N 70/8416 adapted for supplying ionic species
• CPC Class Codes: H10N 70/882 Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
• CPC Class Codes: H10N 70/8822 Sulfides, e.g. CuS
• CPC Class Codes: H10N 70/8825 Selenides, e.g. GeSe
• CPC Class Codes: H10N 70/8828 Tellurides, e.g. GeSbTe
• CPC Class Codes: H10N 70/883 Oxides or nitrides
• CPC Class Codes: H10N 70/8833 Binary metal oxides, e.g. TaOx

Abstract

An ionic structure, including a plurality of electrodes and an ion conductor, wherein at least one of the electrodes and the ion conductor is formed using a printing technique and a method of forming and using the structure are disclosed. Electrical properties of the structure may be altered by applying energy to the structure, and thus information may be stored using the structure. The structure may also be used to form an electrical connection within portions of a device and/or between devices.

Claims

1. A method of forming an ionic structure, the method comprising the steps of:

providing a substrate;

forming a first electrode overlying the substrate;

forming an ion conductor proximate the first electrode; and

forming a second electrode proximate the ion conductor, wherein at least one of the step of forming a first electrode, the step of forming an ion conductor, and the step of forming a second electrode is performed using a printing technique.

2. The method of forming an ionic structure of claim 1, wherein the ion conductor is formed using a liquid glass precursor.

3. The method of forming an ionic structure of claim 1, wherein the step of forming a first electrode comprises depositing a conductive ink.

4. The method of forming an ionic structure of claim 3, wherein the step depositing a conductive ink comprises printing the ink using a technique selected from the group consisting of ink jet printing, screen printing, stamping, lithographic printing, dip-pen printing, and nozzle-applicator pen.

5. The method of forming an ionic structure of claim 1, wherein the step of forming a second electrode comprises depositing a conductive ink.

6. The method of forming an ionic structure of claim 5, wherein the step depositing a conductive ink comprises printing the ink using a technique selected from the group consisting of ink jet printing, screen printing, stamping, lithographic printing, dip-pen printing, and nozzle-applicator pen.

7. The method of forming an ionic structure of claim 1, wherein the step of forming an ion conductor further comprises the steps of depositing ion conductor material, depositing conductive material, and dissolving at least a portion of the conductive material in the ion conductor material.

8. The method of forming an ionic structure of claim 1, wherein the step of forming an ion conductor comprises the step of codepositing ion conductor material and conductive material.

9. The method of forming an ionic structure of claim 1, wherein the ionic structure is formed as a lateral structure.

10. The method of forming an ionic structure of claim 1, wherein the ionic structure is formed as a vertical structure.

11. The method of forming an ionic structure of claim 1, wherein the first electrode comprises inert material and the second electrode comprises material having a property selected from the group of oxidizable, soluble in the ion conductor, electrochemically active, and a combination thereof.

12. The method of forming an ionic structure of claim 1, wherein the first electrode comprises material having a property selected from the group of oxidizable, soluble in the ion conductor, electrochemically active, and a combination thereof and the second electrode comprises material having a property selected from the group of oxidizable, soluble in the ion conductor, electrochemically active, and a combination thereof.

13. The method of forming an ionic structure of claim 1, further comprising the step of applying a bias across the first electrode and the second electrode to cause as least a portion of the first electrode to dissolve in the ion conductor.

14. The method of forming an ionic structure of claim 1, further comprising the step of forming a barrier layer between the ion conductor and one of the first electrode and the second electrode.

15. The method of forming an ionic structure of claim 1, wherein the step of providing a substrate comprises providing a flexible substrate.

16. A method of forming an ionic structure, the method comprising the steps of:

providing a substrate;

printing a first electrode overlying the substrate;

printing an ion conductor proximate the first electrode; and

printing a second electrode proximate the ion conductor.

17. A method of forming an electrical connection comprising the steps of:

providing a substrate;

forming a first electrode overlying the substrate;

forming an ion conductor proximate the first electrode;

forming a second electrode proximate the ion conductor; and

applying a sufficient bias across the first electrode and the second electrode to form an electrical connection between the first electrode and the second electrode, wherein at least one of the step of forming a first electrode, the step of forming an ion conductor, and the step of forming a second electrode is performed using a printing technique.

18. The method of forming an electrical connection of claim 17, further comprising the step of providing a second substrate.

19. The method of forming an electrical connection of claim 17, wherein the printing technique comprises a process selected from the group consisting of ink jet printing, screen printing, stamping, lithographic printing, dip-pen printing, and nozzle-applicator pen.

20. The method of forming an electrical connection of claim 17, wherein the ion conductor is formed using a liquid glass.